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<head>
  <script src="../OLLoader.js"></script>
  <script type="text/javascript">
    var coll;
        
    function test_Collection_constructor (t) {
        t.plan( 4 );
        
      //null param
        coll = new OpenLayers.Geometry.Collection();
        t.ok( coll instanceof OpenLayers.Geometry.Collection, "new OpenLayers.Geometry.Collection returns coll object" );
        t.eq( coll.CLASS_NAME, "OpenLayers.Geometry.Collection", "coll.CLASS_NAME is set correctly");
        t.eq( coll.components.length, 0, "coll.components is set correctly");
        
        OpenLayers.Geometry.Collection.prototype._addComponents = 
            OpenLayers.Geometry.Collection.prototype.addComponents;
        OpenLayers.Geometry.Collection.prototype.addComponents = 
            function(comps) { g_addcomponents = comps; };

      //valid param
        g_addcomponents = null;
        var components = {};
        coll = new OpenLayers.Geometry.Collection(components);
        t.ok(g_addcomponents, components, "addcomponents called on non-null param")
        
        OpenLayers.Geometry.Collection.prototype.addComponents = 
            OpenLayers.Geometry.Collection.prototype._addComponents;
    }

    function test_Collection_addComponents (t) {
        t.plan( 10 );

        coll = new OpenLayers.Geometry.Collection();

      //null
        coll.addComponents(null);
        t.ok(true, "doesn't break on add null components");

        OpenLayers.Geometry.Collection.prototype._addComponent = 
            OpenLayers.Geometry.Collection.prototype.addComponent;

        OpenLayers.Geometry.Collection.prototype.addComponent = 
            function(comp) { g_addComp = comp; g_added++};
            

      //nonarray argument
        var g_added = 0;
        var g_addComp = 0;
        var component = {};
        coll.addComponents(component);
        t.eq(g_added, 1, "added once");
        t.eq(g_addComp, component, "added component");
        
      //array arg
        var g_added = 0;
        var g_addComp = 0;
        var component1 = {};
        var component2 = {};
        coll.addComponents([component1, component2]);
        t.eq(g_added, 2, "added twice");
        t.eq(g_addComp, component2, "added component");

        OpenLayers.Geometry.Collection.prototype.addComponent = 
            OpenLayers.Geometry.Collection.prototype._addComponent;



        coll.addComponents(new OpenLayers.Geometry.Point(0,0));
        coll.addComponents(new OpenLayers.Geometry.Point(10,10));
        t.eq( coll.components.length, 2, "added two components to collection" );
        bounds = coll.getBounds();
        t.eq( bounds.left, 0, "left bound is 0" );
        t.eq( bounds.bottom, 0, "bottom bound is 0" );
        t.eq( bounds.right, 10, "right bound is 10" );
        t.eq( bounds.top, 10, "top bound is 10" );
    }

    function test_Collection_clone (t) {
        t.plan( 3 );
        coll = new OpenLayers.Geometry.Collection();
        coll.addComponents(new OpenLayers.Geometry.Point(0,0));
        coll.addComponents(new OpenLayers.Geometry.Point(10,10));
        coll2 = coll.clone(); 
        t.ok( coll2 instanceof OpenLayers.Geometry.Collection, "coll.clone() returns collection object" );
        t.eq( coll2.components.length, 2, "coll2.components.length is set correctly");
        t.ok( coll2.components[0] instanceof OpenLayers.Geometry.Point,
            "coll2.components.length is set correctly");
    }

    function test_Collection_removeComponents (t) {
        t.plan( 5 );
        coll = new OpenLayers.Geometry.Collection();
        point = new OpenLayers.Geometry.Point(0,0);
        coll.addComponents(point);
        coll.addComponents(new OpenLayers.Geometry.Point(10,10));
        coll.removeComponents(coll.components[0]);
        t.eq( coll.components.length, 1, "coll.components.length is smaller after removeComponent" );
        t.ok( coll.bounds == null, "bounds are nullified after call to remove (to trigger recalc on getBounds()");
        bounds = coll.getBounds();
        t.eq( bounds.left, 10, "left bound is 10 after removeComponent" );
        t.eq( bounds.bottom, 10, "bottom bound is 10 after removeComponent" );
        
        coll = new OpenLayers.Geometry.Collection();
        for(var i=0; i<5; ++i) {
            coll.addComponents(
                new OpenLayers.Geometry.Point(Math.random(), Math.random())
            );
        }
        coll.removeComponents(coll.components);
        t.eq(coll.components.length, 0,
             "remove components even works with multiple components");
        
    }
    
    function test_Collection_calculateBounds(t) {
        t.plan( 9 );
        
        var coll = new OpenLayers.Geometry.Collection();
        coll.calculateBounds();
        t.eq(coll.bounds, null, "null components list gives null bounds on calculation()");

        var p1 = new OpenLayers.Geometry.Point(10,20);
        var p2 = new OpenLayers.Geometry.Point(30,40);
        
        var components = [p1, p2];
        coll = new OpenLayers.Geometry.Collection(components);
        
        coll.calculateBounds();
        
        t.eq(coll.bounds.left, 10, "good left bounds");
        t.eq(coll.bounds.bottom, 20, "good bottom bounds");
        t.eq(coll.bounds.right, 30, "good right bounds");
        t.eq(coll.bounds.top, 40, "good top bounds");

        var newPoint = new OpenLayers.Geometry.Point(60,70);
        coll.addComponent(newPoint);
        coll.calculateBounds();
        
        t.eq(coll.bounds.left, 10, "good left bounds");
        t.eq(coll.bounds.bottom, 20, "good bottom bounds");
        t.eq(coll.bounds.right, 60, "good right bounds");
        t.eq(coll.bounds.top, 70, "good top bounds");
    }
    
    function test_Collection_equals(t) {
        t.plan(1);
        var geom = new OpenLayers.Geometry.Collection();
        t.ok(!geom.equals(), "collection.equals() returns false for undefined");
    }

    function test_Collection_addComponent(t)   {
        t.plan(10);
        
        var coll = new OpenLayers.Geometry.Collection();
        
        //null
        coll.addComponent(null);
        t.ok(!coll.addComponent(null),
             "addComponent returns false for bad component")        

        //good component
        var component = new OpenLayers.Geometry.Point(3,4);
        t.ok(coll.addComponent(component),
             "addComponent returns true for good component");
        t.ok(coll.bounds == null, "bounds cache correctly cleared");         
         
        var foundComponent = false;
        for(var i=0; i< coll.components.length; i++) {
            if (coll.components[i].equals(component)) {
                foundComponent = true;
            }
        }
        t.ok(foundComponent, "component added to internal array");
        
        // restricted components
        coll.componentTypes = ["OpenLayers.Geometry.Point",
                               "OpenLayers.Geometry.LineString"];
        var point1 = new OpenLayers.Geometry.Point(0,0);
        var point2 = new OpenLayers.Geometry.Point(1,1);
        var line = new OpenLayers.Geometry.LineString([point1, point2]);
        var multipoint = new OpenLayers.Geometry.MultiPoint([point1, point2]);
        
        t.ok(coll.addComponent(point1),
             "addComponent returns true for 1st geometry type in componentTypes");
        t.ok(OpenLayers.Util.indexOf(coll.components, point1) > -1,
             "addComponent adds 1st restricted type to components array");
        t.ok(coll.addComponent(line),
             "addComponent returns true for 2nd geometry type in componentTypes");
        t.ok(OpenLayers.Util.indexOf(coll.components, point1) > -1,
             "addComponent adds 2nd restricted type to components array");
        t.ok(!coll.addComponent(multipoint),
             "addComponent returns false for geometry type not in componentTypes");
        t.ok(OpenLayers.Util.indexOf(coll.components, multipoint) == -1,
             "addComponent doesn't add restricted type to component array");

    }
    
    function test_collection_getLength(t) {
        t.plan(2);
        
      //null
        var coll = new OpenLayers.Geometry.Collection();
        t.eq( coll.getLength(), 0, "null coll has 0 getlength");
            
      //valid
        coll.components = [
            { 'getLength': function() { return 50; } },
            { 'getLength': function() { return 15; } }
        ];
        t.eq( coll.getLength(), 65, "coll with valid components correctly sums getlength");
    }
    
    function test_collection_getArea(t) {
        t.plan(2);
        
      //null
        var coll = new OpenLayers.Geometry.Collection();
        t.eq( coll.getArea(), 0, "null coll has 0 getArea");
            
      //valid
        coll.components = [
            { 'getArea': function() { return 50; } },
            { 'getArea': function() { return 15; } }
        ];
        t.eq( coll.getArea(), 65, "coll with valid components correctly sums getArea");
    }
    
    function test_transform(t) {
        t.plan(5);
        var p1 = new OpenLayers.Geometry.Point(0,0);
        p1.bounds = "foo";
        var p2 = new OpenLayers.Geometry.Point(1,1);
        p2.bounds = "foo";
        var line = new OpenLayers.Geometry.LineString([p1, p2]);
        var multipoint = new OpenLayers.Geometry.MultiPoint([p1, p2]);
        var coll = new OpenLayers.Geometry.Collection([
            p1, p2, line, multipoint
        ]);
        coll.bounds = "foo";
        
        var wgs84 = new OpenLayers.Projection("EPSG:4326");
        var sm = new OpenLayers.Projection("EPSG:900913");
        coll.transform(wgs84, sm);
        
        t.eq(coll.bounds, null, "coll bounds cleared");
        t.eq(p1.bounds, null, "p1 component bounds cleared");
        t.eq(p2.bounds, null, "p2 component bounds cleared");
        t.eq(line.bounds, null, "line component bounds cleared");
        t.eq(multipoint.bounds, null, "multipoint component bounds cleared");

    }

    function test_getCentroid_pts_only(t) {
        t.plan(3);

        coll = new OpenLayers.Geometry.Collection();
        coll.addComponent(new OpenLayers.Geometry.Point(0,0));
        coll.addComponent(new OpenLayers.Geometry.Point(1,1));

        centroid = coll.getCentroid(true);
        t.ok(centroid != null, 'The centroid is not null.');
        t.eq(centroid.x, 0.5, 'The centroid x coordinate is good.');
        t.eq(centroid.y, 0.5, 'The centroid y coordinate is good.');

        coll.destroy();
    }

    function test_getCentroid_poly_nonrecursive(t) {
        t.plan(3);

        coll = new OpenLayers.Geometry.Collection();
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(0,0),
                    new OpenLayers.Geometry.Point(0,1),
                    new OpenLayers.Geometry.Point(1,1),
                    new OpenLayers.Geometry.Point(1,0)
                ])
            ])
        );
        // performing non-recursive getCentroid means this next polygon
        // is excluded from the centroid computation
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(2,2),
                    new OpenLayers.Geometry.Point(2,3),
                    new OpenLayers.Geometry.Point(3,3),
                    new OpenLayers.Geometry.Point(3,2)
                ])
            ])
        );

        centroid = coll.getCentroid();
        t.ok(centroid != null, 'The centroid is not null.');
        t.eq(centroid.x, 0.5, 'The centroid x coordinate is good.');
        t.eq(centroid.y, 0.5, 'The centroid y coordinate is good.');

        coll.destroy();
    }

    function test_getCentroid_poly_only(t) {
        t.plan(3);

        coll = new OpenLayers.Geometry.Collection();
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                    new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(0,0),
                    new OpenLayers.Geometry.Point(0,1),
                    new OpenLayers.Geometry.Point(1,1),
                    new OpenLayers.Geometry.Point(1,0)
                ])
            ])
        );

        centroid = coll.getCentroid(true);
        t.ok(centroid != null, 'The centroid is not null.');
        t.eq(centroid.x, 0.5, 'The centroid x coordinate is good.');
        t.eq(centroid.y, 0.5, 'The centroid y coordinate is good.');

        coll.destroy();
    }

    function test_getCentroid_poly_and_pts(t) {
        t.plan(3);

        coll = new OpenLayers.Geometry.Collection();
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(0,0),
                    new OpenLayers.Geometry.Point(0,1),
                    new OpenLayers.Geometry.Point(1,1),
                    new OpenLayers.Geometry.Point(1,0)
                ])
            ])
        );

        // since the polygon above has an area of 1 and these
        // points have an area of 0, they should not change the centroid
        coll.addComponent( new OpenLayers.Geometry.Point(2,2) );
        coll.addComponent( new OpenLayers.Geometry.Point(4,4) );

        centroid = coll.getCentroid(true);
        t.ok(centroid != null, 'The centroid is not null.');
        t.eq(centroid.x, 0.5, 'The centroid x coordinate is good.');
        t.eq(centroid.y, 0.5, 'The centroid y coordinate is good.');

        coll.destroy();
    }

    function test_getCentroid_poly_big_and_small(t) {
        t.plan(3);

        coll = new OpenLayers.Geometry.Collection();
        // polygon w/area=1, centroid=0.5,0.5
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(0,0),
                    new OpenLayers.Geometry.Point(0,1),
                    new OpenLayers.Geometry.Point(1,1),
                    new OpenLayers.Geometry.Point(1,0)
                ])
            ])
        );

        // since the polygon above has an area of 1 and this
        // polygon has an area of 4, the center is weighted 20% toward
        // the first polygon

        // polygon w/area=4, centroid=5.5,5.5
        coll.addComponent(
            new OpenLayers.Geometry.Polygon([
                new OpenLayers.Geometry.LinearRing([
                    new OpenLayers.Geometry.Point(4.5,-0.5),
                    new OpenLayers.Geometry.Point(4.5,1.5),
                    new OpenLayers.Geometry.Point(6.5,1.5),
                    new OpenLayers.Geometry.Point(6.5,-0.5)
                ])
            ])
        );

        centroid = coll.getCentroid(true);
        t.ok(centroid != null, 'The centroid is not null.');
        t.eq(centroid.x, 4.5, 'The centroid x coordinate is good.');
        t.eq(centroid.y, 0.5, 'The centroid y coordinate is good.');

        coll.destroy();
    }

    function test_avoid_infinite_recursion(t) {
        t.plan(1);

        var g = new OpenLayers.Geometry.Polygon([
            new OpenLayers.Geometry.LinearRing(),
            new OpenLayers.Geometry.LinearRing()
        ]);
        var bounds;
        try {
            bounds = g.getBounds();
            t.eq(bounds, null, "Polygon with empty linear ring has null bounds");
        } catch (err) {
            t.fail("Failed to get bounds of polygon with empty linear ring: " + err.message);
        }

    }

    
    function test_Collection_destroy(t) {
        t.plan( 3 );
        coll = new OpenLayers.Geometry.Collection();
        coll.addComponents(new OpenLayers.Geometry.Point(0,0));
        coll.addComponents(new OpenLayers.Geometry.Point(10,10));
        coll.getBounds();
        coll.destroy(); 
        
        t.ok(coll.components == null, "components array cleared");
        t.ok(coll.getBounds() == null, "bounds is cleared");
        t.ok(coll.id == null, "id is cleared");

    }

  </script>
</head>
<body>
</body>
</html>
